Beads average about 12x9mm with a couple of mm of variation possible. These jet black beauties offer a striking appearance worthy of the most elegant and sophisticated design concepts. These pieces are noteworthy for their dark body that is sometimes slightly translucent, allowing some red and rust tone color to be apparent when seen through the light. Fans of jet black beads with a little twist should plan their next slate of Jewelry creations around our fantastic Black Agate offerings, ideal for use in statement necklaces, matching earrings and much more.